/**
 * Created by ztt on 2017/11/14.
 */
function HelloWord() {
    var name;
    this.setName=function (name_) {
        name=name_;
    };
    this.sayHello = function() {
        console.log('Hello ' + name);
    };
};
//把一个对象封装到模块中
module.exports = HelloWord;